OTTO vs Bostik Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OTTO
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An overview of the features: Products: In just a few steps, the user will find the right product for use in the areas of "sealing", "bonding" and "priming". On the respective product page, you will find all the essential details from data sheets and test materials to processing videos. Consumption calculator: The consumption calculator makes it very easy to determine the required amount of sealant based on joint dimension. The quality of the primer can be calculated in the same way. Colour recommendation: For a uniform appearance, the colour of the silicone sealant must always match the grout being used. The app now makes it possible to select your hard joint mortar (tile adhesive) in order to get a suitable colour recommendation for the OTTO sealant. Ordering: Existing OTTO customers can order directly using the app. Personal lists will contain convenient summaries of the desired products and can be managed for subsequent orders. Upon demand, the ordered goods can also be delivered directly to the construction site. Contact: If you have any questions in particular, please contact your OTTO representative directly through the app, or by phone, email or fax. Push messages: Do you like getting important information in advance? Then activate the push message function and get news about OTTO and its products directly on your smart phone. otto-chemie.com/en/privacy-app
Bostik Pro
Access product information, installation guides, and helpful tools for flooring and wall covering materials. Features include a grout calculator, training videos, and a store locator. Earn rewards by tracking and submitting receipts.
- Product catalogs
- Grout calculator
- Installation guides
- Training videos
- Store locator
- Pro Rewards program
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The Bostik PRO app offers product selection tools, TDS, SDS, Grout Calculator, and installation guides. Find information on our hard wood, resilient, tile, and natural stone flooring, as well as sub-floor and wall covering materials. Key features include: • Searchable product catalogs • Bostik grout calculator • Bostik training videos and media center • Technical support contact • Store locator • SDS request • Ability to save favorite products • Training event schedule • Track and submit receipts for Pro Rewards
Screenshots
Verdict
The clearest difference is update cadence: Bostik Pro at every 5 weeks against OTTO's every 3 months. OTTO's advantage is iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
OTTO ships an update every 3 months, Bostik Pro every 5 weeks. The most recent releases landed on September 12, 2026 and August 26, 2026 respectively.
| Parameter | OTTO | Bostik Pro |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.9 (87 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 87 — better |
| Update frequency | Every 3 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 16 MB | 75 MB |
| Age rating | 17+ | 4+ |
| Developer | Hermann Otto GmbH | Bostik SA (FR) |
In-app purchases
OTTO
No in-app purchases
Bostik Pro
No in-app purchases









